NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
30 reportsClear category filter62,438 miles · Sep 25, 2007
Engine And Engine CoolingPower Train
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING 60 MPH, THE CONTACT NOTICED OIL LEAKING FROM THE VEHICLE. THE DEALER STATED THAT THE OIL PUMP CREATED A HOLE IN THE TRANSFER CASE. THE DEALER REPLACED THE BACK HALF OF THE TRANSFER CASE. THE FAILURE MILEAGE WAS 62,438 AND CURRENT MILEAGE WAS 63,000. UPDAT…
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING 60 MPH, THE CONTACT NOTICED OIL LEAKING FROM THE VEHICLE. THE DEALER STATED THAT THE OIL PUMP CREATED A HOLE IN THE TRANSFER CASE. THE DEALER REPLACED THE BACK HALF OF THE TRANSFER CASE. THE FAILURE MILEAGE WAS 62,438 AND CURRENT MILEAGE WAS 63,000. UPDATED 01-14-08. *KB UPDATED 12/12/07. *JB
NHTSA ODI #10204056
94,000 miles · Jul 24, 2007
Power Train
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. THE CONTACT DISCOVERED THAT THE TRANSMISSION WAS LEAKING FLUID WHILE BACKING OUT OF THE DRIVEWAY. HE STATED THAT THE TOP OF THE TRANSMISSION CASE WAS CRACKED. THE TRANSMISSION IS FINE, BUT THERE IS A STRESS CRACK ON THE OUTER CASE. THE REPAIR WILL COST ANYWHERE FROM $3…
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. THE CONTACT DISCOVERED THAT THE TRANSMISSION WAS LEAKING FLUID WHILE BACKING OUT OF THE DRIVEWAY. HE STATED THAT THE TOP OF THE TRANSMISSION CASE WAS CRACKED. THE TRANSMISSION IS FINE, BUT THERE IS A STRESS CRACK ON THE OUTER CASE. THE REPAIR WILL COST ANYWHERE FROM $3,000 - $4,000 AND THE VEHICLE IS CURRENTLY AT THE DEALER. THE VIN, ENGINE SIZE, AND PURCHASE DATE WERE UNKNOWN. THE CURRENT AND FAILURE MILEAGES WERE 94,000.
NHTSA ODI #10197385
51,000 miles · Oct 3, 2006
Power Train
I HAD THE TRANSMISSION FLUID FLUSHED AND FILTER CHANGED AND THE MECHANIC TELLS ME THERE WAS A LOT OF METAL PARTICLES IN THE TRANSMISSION FLUID AND FELT THERE WAS AN IMPENDING FAILURE. THE CHEVY DEALER TOLD ME TO WAIT TO SEE WHAT OCCURS SINCE HE HAD NOT HEARD OF AN ALLISON TRANSMISSION FAILING AT 50,000 MILES WHICH IS WHERE THE …
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I HAD THE TRANSMISSION FLUID FLUSHED AND FILTER CHANGED AND THE MECHANIC TELLS ME THERE WAS A LOT OF METAL PARTICLES IN THE TRANSMISSION FLUID AND FELT THERE WAS AN IMPENDING FAILURE. THE CHEVY DEALER TOLD ME TO WAIT TO SEE WHAT OCCURS SINCE HE HAD NOT HEARD OF AN ALLISON TRANSMISSION FAILING AT 50,000 MILES WHICH IS WHERE THE MILEAGE WAS AT WHEN I HAD THE ABOVE SERVICE DONE. IT SEEMS TO DRIVE FINE BUT I AM VERY CONCERNED. I HAVE A DURAMAX ENGINE WITH THE ALLISON TRANSMISSION BOUGHT IN 2003 OF A 2003 CHEVY SILVERADO DIESEL 2500HD. LITTLE TOWING DONE WITH THE VEHICLE SO THAT IS NOT THE CAUSE. *NM
NHTSA ODI #10169881
54,385 miles · Jun 12, 2006
Electrical SystemEngine And Engine CoolingFuel System, Gasoline
CONSUMER COMPLAINT CONCERNING TRANSMISSION FAILURES ON 2003 SILVERADO. *TS THE TRANSMISSION FLUID WAS BURNT, THE REVERSE GEAR WAS INOPERABLE AND THE TRANSMISSION SHIFTER WAS LOOSE. THE POWER STEERING FLUID WAS LOW. FLUID WAS LEAKING FROM THE GEAR BOX. THE FRONT SEAL ON THE POWER STEERING PUMP WAS WORN AND LEAKING, AS WELL AS…
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CONSUMER COMPLAINT CONCERNING TRANSMISSION FAILURES ON 2003 SILVERADO. *TS THE TRANSMISSION FLUID WAS BURNT, THE REVERSE GEAR WAS INOPERABLE AND THE TRANSMISSION SHIFTER WAS LOOSE. THE POWER STEERING FLUID WAS LOW. FLUID WAS LEAKING FROM THE GEAR BOX. THE FRONT SEAL ON THE POWER STEERING PUMP WAS WORN AND LEAKING, AS WELL AS THE LOWER HOSE. THE WATER PUMP GASKET AND LOWER RADIATOR HOSE WAS LEAKING. THE BATTERY WAS REPLACED BECAUSE IT WOULD NOT HOLD A CHARGE. THE A/C WOULD ONLY BLOW OUT AIR FROM THE DEFROST VENTS. THE A/C HEATER MODE DOOR ACTUATOR WAS WORN. THE CHECK ENGINE LIGHT ILLUMINATED. THE FUEL FILTER WAS REPLACED. THE PANEL ON THE DRIVERS SEAT WAS WARPED. THE TIRES WERE REPLACED, HOWEVER MONTHS LATER ONE OF THE TIRES DEVELOPED A SLOW LEAK, DUE TO A PIN HOLE LOCATED IN THE SIDEWALL. THE REAR PADS AND ROTORS WERE REPLACED. THE FRONT AND REAR SHOCKS WERE REPLACED. THE TAIL GATE SUPPORT CABLES WERE REPLACED. THE REAR TIRE BLEW OUT WHILE DRIVING. THE SECOND ROW SEAT BELT WAS INOPERATIVE. *JB
NHTSA ODI #10160513
54,000 miles · Sep 18, 2005
Power Train
TOOK VEHICLE TO DEALER TWICE WITH COMPLAINT OF PARKING BRAKE NON FUNCTIONAL. ALLOWED TRUCK TO MOVE FWD. WHEN PARKED ON INCLINE,PRK BRAKE PEDAL FULLY DEPRESSED. SUPPOSEDLY BRAKES ADJUSTED TWICE,PROBLEM NEVER BETTER POST DEALER SHOP VISIT. TOOK IT TO PRIVATE SHOP. FOUND TO HAVE PADS SOAKED WITH DIFFERENTIAL FLUID FROM REAR END SEA…
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TOOK VEHICLE TO DEALER TWICE WITH COMPLAINT OF PARKING BRAKE NON FUNCTIONAL. ALLOWED TRUCK TO MOVE FWD. WHEN PARKED ON INCLINE,PRK BRAKE PEDAL FULLY DEPRESSED. SUPPOSEDLY BRAKES ADJUSTED TWICE,PROBLEM NEVER BETTER POST DEALER SHOP VISIT. TOOK IT TO PRIVATE SHOP. FOUND TO HAVE PADS SOAKED WITH DIFFERENTIAL FLUID FROM REAR END SEAL FAILURE. MOST PROBABLE CAUSE OF EMERGENCY BRAKE FAILURE. ON DISCUSSING WITH MECHANIC, HE MENTIONED THIS IS A KNOWN COMMON FAILURE ON THESE UNITS. PAID FOR REPAIRS MYSELF. NEVER SUBMITTED FOR WARRANTY REPAIR TO THE DEALER OR TO THE EXT. WARRANTY CONTRACT COMPANY (AUTOGAP XTEND). PROBLEM IS FIXED NOW. SEALS ,OLD PADS, REPAIR RECEIPT ARE IN MY POSSESSION. *NM
NHTSA ODI #10136874
72,862 miles · Aug 25, 2005
Electrical SystemPower TrainVehicle Speed Control
DT: THE CONSUMER STATES THAT 2003 CHEVROLET C 2500 WAS HAVING A MESSAGE ON THE INSTRUMENT PANEL SHOWING REDUCED ENGINE POWER. THEN, THE ENGINE IMMEDIATELY DROPPED POWER. THE SPEED WILL DRAMATICALLY SLOW TO AROUND 15 MPH. THIS HAPPENED 5 TIMES CURRENTLY. THERE HAVE BEEN SEVERAL NEAR MISSES AS A RESULT OF THE POWER REDUCTION. T…
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DT: THE CONSUMER STATES THAT 2003 CHEVROLET C 2500 WAS HAVING A MESSAGE ON THE INSTRUMENT PANEL SHOWING REDUCED ENGINE POWER. THEN, THE ENGINE IMMEDIATELY DROPPED POWER. THE SPEED WILL DRAMATICALLY SLOW TO AROUND 15 MPH. THIS HAPPENED 5 TIMES CURRENTLY. THERE HAVE BEEN SEVERAL NEAR MISSES AS A RESULT OF THE POWER REDUCTION. THE VEHICLE HAS BEEN IN THE DEALERSHIP 5 TIMES FOR THE ENGINE POWER FAILURE. THE DEALER REPLACED THREE TIMES THE WIRING HARNESS TO THE THROTTLE POSITION SENSOR, THROTTLE BODY, POWER TRAIN CONTROL MODULE, THROTTLE ACTUATOR, CONTROL MODULE, ALSO, THE IGNITION SWITCH WAS REPLACED AND THE ENGINE WAS STILL LOSING POWER. THE MANUFACTURER HAS BEEN CONTACTED, AND THE CUSTOMER SERVICE DEPARTMENT WAS VERY UNWILLING TO HELP OR PROVIDE THE ADDRESS TO THE REGIONAL OFFICE. THE CUSTOMER SERVICE REPRESENTATIVE WAS VERY RUDE AND REFUSED TO TRANSFER THE CALL TO HIS SUPERVISOR UPON REQUEST OF THE CONSUMER. *AK
NHTSA ODI #10134222
157,000 miles · Apr 29, 2005
Power TrainVehicle Speed Control
THE TRANSFER CASE ON MY CHEVROLET 2500 HD CREW CAB HAS WENT OUT FOR THE 2ND TIME IN 2 YEARS, 1ST INCIDENT WAS MARCH 2004 ,AND NOW APRIL 2005. PLASTIC GEARS SEEM TO STRIP WHENEVER ENGAGED IN 4-WHEEL DRIVE AFTER NOT BEING UTILIZED FOR ANY LENGTH OF TIME.*AK
NHTSA ODI #10118673
Mileage unknown · Aug 27, 2004
Power Train
WHEN LOADING AND GOING AROUND CURVES AUTOMATIC TRANSMISSION WILL GO INTO NEUTRAL WITH GEAR SHIFT STILL IN DRIVE. THE MOTOR RACED, AND VEHICLE WAS IN SHOP TWICE. *AK
NHTSA ODI #10089853
Mileage unknown · Apr 9, 2003
Power Train
2003 CHEVY 2500 TRUCK, 6.0 LITER ENGINE WITH STANDARD SHIFT TRANSMISSION. THE TRUCK HAS AN ELECTRONIC THROTTLE. THE THROTTLE HAS A DELAY OFF OF IDLE IN RPM AND POWER. WHEN THE TRUCK IS STOPPED AT A LIGHT ON A HILL YOU CANNOT PREVENT EXCESSIVE ROLL-BACK OR STALL BECAUSE OF THE DELAY. IF THE TRUCK IS IN A NOISY ENVIRONMENT THE…
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2003 CHEVY 2500 TRUCK, 6.0 LITER ENGINE WITH STANDARD SHIFT TRANSMISSION. THE TRUCK HAS AN ELECTRONIC THROTTLE. THE THROTTLE HAS A DELAY OFF OF IDLE IN RPM AND POWER. WHEN THE TRUCK IS STOPPED AT A LIGHT ON A HILL YOU CANNOT PREVENT EXCESSIVE ROLL-BACK OR STALL BECAUSE OF THE DELAY. IF THE TRUCK IS IN A NOISY ENVIRONMENT THE PROBLEM IS EVEN WORSE BECAUSE YOU CAN NOT TELL WHAT THE ENGINE WILL DO, OR IS DOING UNLESS YOU STARE AT THE TACHOMETER. YOU CAN NOT PREDICT ENGINE RESPONSE FROM THE THROTTLE POSITION WHEN STARTING OUT FROM A DEAD STOP ON A GRADE. I HAVE OWNED 3 CARS, 2 TURCKS, BACKHOE AND FARM TRACTOR WITH A STANDARD SHIFT TRANSMISSION AND HAVE A VALID STATE OF OHIO CDL LICENSE.*JB
NHTSA ODI #10014189
9,000 miles · Feb 25, 2003
Power Train
THE VEHICLE DOWN SHIFTED ERRATICALLY, WHICH CAUSED THE REAR WHEELS TO LOCK AND THE VEHICLE TO SPIN. *JB
NHTSA ODI #10009254